docs: def admin(self):
          """points to the adminstrative side of ArcGIS Server"""
          if self._securityHandler is None:
              raise Exception("Cannot connect to adminstrative server without authentication")
          from ..manageags import AGSAdministration
          return AGSAdministration(url=self._adminUrl,
                                   securityHandler=self._securityHandler,
                                   proxy_url=self._proxy_url,
                                   proxy_port=self._proxy_port,
                                   initialize=False)